Afternoon guys,have a question about bushing if that is the correct name.I have a 8" bench grinder that has a 5/8 shaft,I also have several buffing wheels that has a 1" bore I guess for a grinder with a 1" shaft.On one of my older grinders the wheels have a white plastic sleeve that is 1" diameter with a 5/8 bore so that the wheels fits the grinder.Where can a person find these and what are they called?Tks guys kroll